Joe Groff b51d43377e Runtime: Properly handle demangling nested generic typerefs with symbolic manglings. ...

The demangling tree for a symbolic reference doesn't indicate the generic context depth of the referenced type, so we have to form the type metadata from whole cloth without incrementally building up nested types as we do for concrete mangled types. Notice when DecodedMetadataBuilder is passed a context descriptor ref without a parent and directly form the entire type in this case. Fixes rdar://problem/38891999.

2018-04-05 16:23:16 -07:00

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